Forget about weight for a minute, I know the Ksyrium SSC SL 04's are 100g heavier then the Vigors, and there rotational mass is pretty much the same, 440g rim vs. 430. But which wheel is faster? This has been bugging me for a year. The ksyrium has all of those bladed spokes to slice through the wind, but then the rim is box shaped. Wouldn't that defeat the whole point of the aero spoke, rim shape is more important is it not? So the 34mm rolfs would be alot faster on flats right? I've rode the rolfs and they seem to me the fastest aluminum clinchers, but I have never ridden ksyriums. I guess what I'm trying to get at do they compare on flat land speed? Significant difference or little?

Also what about stiffness? The rolfs seemed to give a little in hard turns and descents, and the ksyriums look like they would be really stiff with all of those thick aluminum spokes. What do you think, they alot stiffer or not really, talking lateral stiffness, not vertical. Thanks

Not sure about the Ksyriums vs the Vigors, but I have known many people to have problems with Rolfs. I havn't known anyone who has had problems with the Ksyriums other than a broken spoke here and there. I had good luck with them when I had some. I don't believe that the spokes really make any arrow difference though. It seems that deeper rims always seem to make the most difference for me, not the spokes. Just got back from a training ride this AM and a buddy of mine was on the new silver Ksyriums. I must say they looked great! Hey spytech, if you read this the guy with the new Ksyriums had them on the Carbon Giant like yours and the wheels looked great on it!

In the german TOUR- Magazin was in April 2000 a test of 10 system wheelsets. They found out that normaly spoked rims are better and more aerodynamic than paired Spokes, like Shimano or Rolf Wheels.They tested it with 45km/h on a track with the same driver in the same position: Thats the power you need and the stbility of the wheels:

my 2004 ksyriums sl came in 2 days ago but the rims were a little scrathed up, only on the braking surface. they were brand new sealed in 2 boxes. but i dont know if i should return them i paid $670 shipped.

it means the vector pro carbon needs more power (watt = w) at 30 mph than the ksyriums=> the ksyriums are more aerodynamic.
The Static means the side rigidy:
you need for the mavic frontwheel 5O N to flex it 1mm to side, rear 37,7N
Rolf: front 43.5N rear 26,31 N
The Ksyrium are the stiffer ones.
The stiffest wheelset was the Citec3000 : front 62,5N/mm, rear 64,51N/mm

To accelerate, the lightweight and rolf wheels are the best,they are the lightest.

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